Boring-machine.



H. M. DIXON.

BORING MACHINE.

APPLICATION FILED OCT. 3, 1913.

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Patented June 6, 1916.

2 SHEETS-SHEET I.

THE COLUMBlA PLANOURAPH co., WASHINGTON. D c.

H. M. DIXON n I I i ,LQ E: l 1 3 CD gwuento o H. M. DIXON.

BORING MACHINE. APPLicATwu man OCT. 3. 1913.

1,186,173. I l ,;atented June 6,1916.

2 SHEETS-SHEET 2.

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\ illllll! UNITED sTAIrns PATNT OFFICE.

HENRY MADDISON DIXON, OF WESTPOINT, TENNESSEE.

BORING-MACHINE.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed October 3, 1913. Serial No. 793,183.

' proved means whereby it may be employed with convenience in connection with a work bench or the like and wherein the tool operat'ively engaged with the device may be readily adjusted to various positions.

The invention consists in the details of construction and in the combination and arrangement of the several parts whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will be carefully defined in the appended claims.

In order that my invention may be the better understood, I will now proceed tov describe the same with reference to the accompanying drawings, wherein Figure 1 is a view in side elevation of a bench illustrating a boring machine constructed in accordance with my invention as applied thereto; Fig. 2 is a fragmentary longitudinal section taken through the bench illustrating certain features of my invention; Fig. 3 is a view in top plan of the device as illustrated inFig. 1; Fig. 4 is a fragmentary view partly in top plan and partly in section illustrating certain features of my invention; and Fig. 5 is a fragmentary transversesectional view taken through Fig. 1, illustrating other details of my invention as herein embodied.

As disclosed in the accompanying drawings, 1 denotes a work bench which may be of any ordinary or preferred construction having one end portion bridged by the yoke member 2. This yoke member 2 is substantially U-shaped and'has its stems contacting with the opposite faces of the bench 1 and held thereto by the retaining member 3 herein shown as a bolt passing through such stems adjacent the outer ends thereof and through the bench 1 and such yoke is held against axial movement about the retaining member 3 through the medium of the endwise adjustable member 4 herein shown as a screwthreaded through the base portion of the yoke 2 and adapted to penetrate the adjacent end portion of the bench 1 in a manner believed to be obvious.

Produced in the stems of the yoke 2 intermediate their length are the alined elongated openings 5 in register with a suitable opening afforded in the bench 1 thereby producing a passage for the supporting arm 9 adapted for endwise movement through such passage and extending beyond both faces of the bench 1. The supporting arm 9 has its lower end portion extended through an opening 10 produced in a head 11 adaptto be suitably supported through the medium of the legs 12 and 14 upon the floor or other supporting surface on which the bench 1 may rest. In order that the head 11 may be adjusted in order to compensate for any irregularities of the floor or other supporting surface and in order to prevent a binding of the arm 9, the leg 14 is endwise adjustable relatively to the head 11 and as herein set forth is separable therefrom but is caused to enter within the socket member 15 depending from the head 11 and such head 11 and leg 14L are locked or maintained in their adjusted positions through the medium of the set screw 16 operating in a well known manner. In order that this adjustment of the head 11 may be efiected, the leg 12 possesses a certain degree of flexibility and produced on one of the longitudinal edges of the arm 9 are the rack teeth 17 with which is adapted to mesh a pinion 18 carried by a.

shaft 19 suitably mounted in the head 11 whereby it is thought to be obvious that upon proper rotationof the shaft the arm 9-may be adjusted as desired in either direction.

To the upper end portion of the arm 9 is secured the cross arm or head 22 of a predetermined length' and adapted to be disposed in' a plane substantially parallel with the plane of the upper surface of the table 1, such relative position being determined through the adjustability of'the arm 9, as hereinbefore recited.

The inner end of the head 22 is provided with the upturned portion 23 on which is positioned a bearing 24: for the shaft 28,

which shaft has its opposite portion mounted in a second bearing 26 positioned on the upturned portion 27 of the outer end of the head 22. This shaft 28 may be driven by power or manually and for this reason has afiixed thereto the pulleys 20 adapted to be engaged with the drive belt 30 leading from any suitable source of power and also pro vided with the operating crank 31 whereby said shaft may be manually rotated, when desired. It might be well to state that one of the pulleys 20 is an idler pulley for reasons which are believed to be obvious. To further support the shaft 28, I provide the bracket 29 suitably secured to the bearing 26 and held thereto by the clamping bolt 6 of the bearing. This bracket bridges or straddles the pulleys 20 and has its outer extremity provided with the bearing 7 through which the shaft 28 passes whereby it will be readily observed that the projected portion of this shaft 28 is properly supported. In order that the belt 30 may be properly shifted relatively to the pulleys 20, I provide the arm 9 with the upwardly directed extension 21 to which is adapted to be suitably pivoted the usual. shifting lever (not shown) whereby it will be observed that irrespective of the adjustment of the arm 9, the lever will at all times be in convenient position for controlling the belt 30.

The shaft 28 is adapted for endwise movement through its several bearings in order that the tool mounted in the chuck 25 thereof may be properly fed toward or from the work to be operated upon and while any means that will operate with facility may be employed for imparting such recurrent movement to the shaft 28, I prefer to employ the construction shown in the accompanying drawings wherein is suitably affixed to the shaft 28 rearwardly of the bearing 24- the collar 33 herein shown as fixedly held to the shaft 28 through the medium. of the set screw 34 operating in the well known manner, and to either side of such collar 33 are positioned the collars 4:0 in which the shaft 28 is free to rotate, such collars being maintained in contact with the collar 33 through the medium of the connecting or tie strips 41, the intermittent portions whereof are oflset, as indicated at 42 to permit the passage therebeneath of the set screw 34 whereby the rotation of the shaft 28 is in no wise interfered with. Each of the straps 41 have the rearwardly directed extensions or clips 37,'to the outer extremities of which are pivot-ally engaged the links 36 which in turn are in pivotal engagement with the forks 35 straddling the shaft 28 and produced in the inner end of the lever 32 pivotally secured intermediate its length, as at 33, to the bracket 34 secured to the cross arm or head. 22.

I do not wish to be limited to the charactor of tool to be employed but my invention is particularly adapted to be employed with boring tools, reamers or the like as are particularly employed by wheelwrights and the operation of my particular device as herein disclosed, is thought to be clearly apparent.

Cooperating with the boring device proper, I employ a suitable work holder disposed in substantially the same horizontal. plane as the cross arm or head 22 and as herein disclosed such work holder includes the inverted til-shaped frame 38 suitably affixed to the upper surface of the bench or table 1 and having secured between the legs thereof in close proximity to the table and a suitable distance below the horizontal plane of the shaft 28 the work rest or block 39 with which is adapted to co-act the clamping member 49 endwise adjustable through the projection 50 extending from the head 51 of the frame 38 in a direction toward the boring machine proper and operable in a manner believed to be self-evident.

While the adjustment of the supporting arm 9 may be effected in a convenient manner, I herein disclose the shaft 19 as provided with an operating crank 13 although I do not wish to be limited to any particular manner in which the shaft 19 may be caused to rotate.

In order to properly aline the arm 9 and to serve to maintain the same in its various adjustments, I employ the endwise adjustable clamping member 47 herein shown as a screw threaded through a bracket 48 and maintained from the under surface of the bench 1 and adapted forcontact with the adjacent edge of the arm 9.

I have also found it of advantage that means he provided for supporting the forward portion of the head or arm 22 in order to steady the machine and as herein disclosed, I accomplish this by having depending from such arm or head 22 in close proximity to the forward end thereof the arm 45 projecting through a suitable opening produced in the table or bench 1 and adapted to be effectually maintained in its adjusted position through the medium of the clamping screw 46 which operates in a manner which is thought to be clearly apparent.

From the foregoing description of my improvements, it is thought to be obvious that a boring machine constructed in accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the convenience and facility with which it may be applied in operative position and it will also be obvious from theforegoing description that my improved boring machine is capable of some change and modification without material departure from the principles and scope of the invention and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice.

WVhat I claim is 2- 1. In combination with a support having a plurality of openings therein, a head positioned above the support, tool operating means carried by the head, arms depending from the head and projected through the openings in the support, means positioned beneath the support and supported independently thereof coacting with the outer of the arms to impart movement to the head relatively to the support, and separate clamping means carried by the support coacting with each of the arms for maintaining the same in adjusted position.

2. In combination with a support having a plurality of openings therein, a head positioned above the support, tool operating means carried by the head, arms depending from the head and projected through the openings in the support, means positioned beneath the support and supported independently thereof coacting with the outer of the arms to impart movement to the head relatively to the support, separate clamping means carried by the support coacting with each of the arms for maintaining the same in adjusted position, one of said clamping means including a bracket depending from the support in close proximity to the arm coacting with the operating means for the head, and a member endwise adjustable through such bracket and engageable with a face of such arm, such member also serving as a means to maintain such arm in requisite alinement.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

HENRY MADDISON DIXON. .Vitnesses:

- FRANK BLAIR, Jr.

M. L. CoUoH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

